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| /openbmc/u-boot/drivers/spi/ |
| H A D | sh_qspi.c | ea5512eb Tue Apr 10 09:43:47 CDT 2018 Marek Vasut <marek.vasut+renesas@gmail.com> spi: sh_qspi: Make use of the 32byte FIFO
The QSPI controller on RCar Gen2 has 32byte FIFO. Instead of doing
the SPI transmission 1 byte at time, if there is a 32byte chunk of
data to be transferred, fill the FIFO completely and then transfer
the data to/from the FIFO. This increases the SPI NOR access speed
significantly.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
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